KDA 2.1-150-3-LPS-W1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat KDA 2.1-150-3-LPS-W1 is a spindle drive from the KDA Spindle Drives series, featuring a rated current of 150 Amps and a DC supply voltage of 300 VDC. It is equipped with a mounted heatsink blower for forced cooling and includes a serial RS 232 C interface. The drive supports a SERCOS Interface for speed command value and operates in ambient temperatures from 5 to 45 degrees Celsius.
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Product Description:
Bosch Rexroth Indramat manufactures the KDA 2.1-150-3-LPS-W1 in its KDA Spindle Drives series. The unit is a spindle drive designed to regulate high-speed machining spindles, delivering controlled torque and coordinated speed profiles to CNC controllers and other motion platforms in industrial automation. It is intended for machine tools and similar equipment that require stable spindle behavior during acceleration, cutting, and speed changes under varying process loads. Closed-loop regulation helps the spindle follow commanded velocity changes accurately, which supports repeatable motion during continuous production. The drive is suited to processes where spindle stability directly affects surface finish and dimensional consistency.
The heat sink blower runs from an auxiliary supply of 220 V/50–60 Hz, so the cooling fan can operate even when the main DC link is de-energized. Heat is removed by a mounted heat sink blower, and airflow is intensified through forced cooling to maintain semiconductor temperatures within limits at continuous load. The separate blower supply also supports airflow during standby periods. Internally, the power electronics are fed by a DC bus rated at 300 VDC, and the current path to the spindle is sized for up to 150 A of continuous output. Command velocity data arrives over the SERCOS interface, a fiber-optic real-time fieldbus that provides deterministic speed setpoints from the machine controller without the noise sensitivity of analog signaling.
The drive operates in ambient air from 5 to 45 °C, allowing use in standard shop-floor conditions without external conditioning. Operation is permitted up to 1000 m above sea level, covering typical plant elevations before derating is required. Parameter setting and diagnostics are available through an RS-232-C serial port for direct connection to a laptop or HMI, which provides access to operating data and setup values. An additional encoder channel accepts spindle or auxiliary motor feedback, allowing phase-synchronous positioning when dual transducers are required. This extra feedback input supports applications that need spindle orientation or synchronized auxiliary motion.
Frequently Asked Questions about KDA 2.1-150-3-LPS-W1:
Q: What is the rated current of the KDA 2.1-150-3-LPS-W1 spindle drive?
A: The KDA 2.1-150-3-LPS-W1 spindle drive has a rated current of 150 A, suitable for high-power spindle applications.
Q: What cooling method does the KDA 2.1-150-3-LPS-W1 employ?
A: This model utilizes a mounted heatsink blower with forced cooling to manage heat during operation.
Q: What is the DC supply voltage requirement for the KDA 2.1-150-3-LPS-W1?
A: The spindle drive operates with a DC supply voltage of 300 VDC.
Q: What additional interface is provided on the KDA 2.1-150-3-LPS-W1?
A: A serial interface (RS 232 C) is available on this unit for additional connectivity options.
Q: What is the maximum installation elevation for the KDA 2.1-150-3-LPS-W1 spindle drive?
A: The KDA 2.1-150-3-LPS-W1 can be installed up to 1000 meters above sea level without derating.
